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How do I enable "Open Closed Tab?"

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  • 1 has this problem
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  • Last reply by cor-el

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I use FireFox with the home page set to DuckDuckGo. Is this the reason the "Open Closed Tab" feature is greyed out?

I use FireFox with the home page set to DuckDuckGo. Is this the reason the "Open Closed Tab" feature is greyed out?

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You can check for problems with sessionstore.js file(s) in the Firefox profile folder that store session data.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

See also:

Make sure that you do not run Firefox in (permanent) Private Browsing mode (Never remember history).

  • Tools > Options > Privacy > Firefox will: "Use custom settings for history"
  • Deselect: [ ] "Always use Private Browsing mode"